* {
	margin: 0;
	padding: 0;
	list-style: none;
}
.fl {
	float: left;
}
.fr {
	float: right;
}
.clear-fix::after {
	content: '';
	clear: both;
	display: block;
}
.w {
	width: 1200px;
	margin: 0 auto;
}
a {
	display: block;
	color: inherit;
	text-decoration: none;
	cursor: pointer;
}